Retaining means.



E MATTMAN RETAINING MEANS.

APPLICATION FILED JAN-2% 1914.

1,272,693. Patented July 16, 1918.

INVENTOR M ATTORNEY UNITED STATES PATENT OFFICE.

EMIL MATTMAN, OF WILKINSBURG, PENNSYLVANIA; ASSIGNOR '10'WESTINGrI-IOUSE ELECTRIC ANDMJANUFACTURING COMPANY, A'CORPORATION OF- PENNSYLVANIA.

' RETAINING- MEANS.

Specification of Letters Patent.

Patented July 16, 1918.

Application'filed January 24, 1914. Serial N 018141157.

To all whom it may concern:

Be it known that I, EMIL MATTMAN, a citizen of the United States, and a resident of lVilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Retaining Means, of which the following is a specification.

My invention relates to retaining means, and particularly to devices for maintaining an electrical apparatus in a fixed position within an inclosing casing.

It is generally desirable to provide means for firmly holding transformers in their casings in order to lessen the liability to displacement and consequent injury to their insulation. Heretofore, cumbersome devices have been utilized for holding transformers in fixed positions within their tanks. Inasmuch as it is preferable to minimize the total weight and cost of transformers, I have provided simple and inexpensive holding devices as a means to aid in securing such result. Another advantage accruing from the use of my invention lies in the fact that my device may be expeditiously applied and removed from the transformer without the employment of special tools and skilled workmen.

F or a better understanding of the nature of my invention, reference may be had to the following description and to the accom panying drawing in which Figure l is a plan view of a transformer disposed within a tank and equipped with a form of my invention; Fig. 2 is an enlarged cross sectional view, taken along the line II-II of Fig. 1, and Fig. 3 is an enlarged plan view of a device constructed in accordance with my invention.

Referring to F 1, a transformer 1 of a usual type of construction is disposed within a cylindrical tank 2 which is reinforced, at its upper edge, by a cast annular member 3. It is apparent that a cover (not shown) will be applied to the transformer tank and be provided with insulating bushings to permit the transformer leads to project and be insulated from the tank. The transformer 1 comprises a lower end frame (not shown) and an upper end frame 4, core members 5 and 6, and a plurality of spaced and insulated pancake coils 7 which compose the primary and secondary windings of the transformer. Tie rods 8 cooperating with channel bars 9 that are disposed in parallel relation on opposite sides of the coils 7, provide means for reinforcing and bracing the coils when currents of abnormally high value traverse them. It will be noted that two opposite sides of the end frame 1 are provided with laterally projecting flanges 10 and 11 with which tie rods 12 engage, said rods engaging similarly positioned flanges (not shown) on the lower end frame. Plates 13 are secured to the flanges l0 and 11 by means of bolts 14, substantially as shown in the drawing. The plates 13 are so disposed as to am firmly against the inner surface 15 of the inclosing tank By properly positioning the plates 13 at each of the four corners of the upper end frame 4:, assurance is had that the transformer 1 will be prevented from becoming laterally displaced.

Fig. 2 shows, in detail, the combination of a plate 13 with the flange 11 of the upper end frame 1. It will be seen that the plate 13 abuts against the engaging surface 15 of the tank 2 and is firmly held in this position by means of the bolt 1 1. In order to facilitate the positioning of the transformer 1, the hole 13 in the plate 13, through which the bolt 14 projects, is eccentrically disposed, as shown in Fig. 3. As a result of this arrangement, each plate 13 may be so positioned as to utilize the proper dimension for effecting a suitable engagement between it and the wall of the tank. The principal plan dimensions of the plate 13' are indicated in Fig. 3 by letters A, B, C and D and are preferably dissimilar and vary from one another by an eighth or a quarter of an inch, etc., as convenience in applying the plates may dictate. For instance, if the transformer 1 were placed slightly off center in the tank, the plates would have to be so ap plied as to properly engage the coacting walls of the tank to retain the transformer in a fixed position.

lVhile I have herein described my invention. as applied to transformers disposed within containing casings, my invention is not intended to be limited to this particular embodiment.

I claim as my invention:

The combination with a containing case having smooth inner walls, and an electrical apparatus disposed in said case, horizontally disposed and eccentrically apere tured fiat plates constituting bracing means,

' andmeans to secure said plates to the appasubscribed my name this 14th day of J an.,

ratus, said eccentric plates firmly abutting 1914. against the smooth surfaced inner Walls of J said containing case, thereby precluding latf ,nMiL 1 MATTMAN eral displacement of the electrical appara- Witnesses: tus. V J T. ROBERTS, In testimony whereof, I have hereunto B. HINES.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

Washington, I). 0. 

